A few of the more appropriate fixtures that have enough power and an improved spectrum are the GHL Mitras, the Pac Sun's and ReefTech. You could also use AI Sol's, they will reach the depth, but because of the tight optics they will only adequately a 12x12 area, and it is one of the fixtures that more people are leaving due to the lack of spectrum and loss of coral color.
If it were me, I would pick up a couple LumenBrites or LumenMax Elite's and HQI ballasts and wait another year or so until the LED fixtures available are better. I plan on moving to LEDs at some point, but I don't believe now is the time. Keep in kind that what works on a shallow tank will jot work the same on a tall tank, and you have a tall tank.
If it were me, I would pick up a couple LumenBrites or LumenMax Elite's and HQI ballasts and wait another year or so until the LED fixtures available are better. I plan on moving to LEDs at some point, but I don't believe now is the time. Keep in kind that what works on a shallow tank will jot work the same on a tall tank, and you have a tall tank.
